diff --git a/torchvision/models/densenet.py b/torchvision/models/densenet.py
index d4dc283a5f5..b58e8b413e1 100644
--- a/torchvision/models/densenet.py
+++ b/torchvision/models/densenet.py
@@ -92,7 +92,6 @@ def forward(self, input):  # noqa: F811
 
 class _DenseBlock(nn.ModuleDict):
     _version = 2
-    __constants__ = ['layers']
 
     def __init__(self, num_layers, num_input_features, bn_size, growth_rate, drop_rate, memory_efficient=False):
         super(_DenseBlock, self).__init__()